Regular Expressions 101

Explanation

Pro

^start of line

Group 1((0[1-9]|[1-4][0-9]|5[0-6])( +|$)){6}

{6}repeats the group contents below exactly 6 times:

Group 2(0[1-9]|[1-4][0-9]|5[0-6])

1st Alternative0[1-9]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

2nd Alternative[1-4][0-9]

Character Class[1-4]

1-4one character from 1 (49₁₀) to 4 (52₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

3rd Alternative5[0-6]

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

Character Class[0-6]

0-6one character from 0 (48₁₀) to 6 (54₁₀)

Group 3( +|$)

1st Alternative +

+the literal (32₁₀ / 40₈ / 20₁₆) , repeated at least once

2nd Alternative$

$end of line

Negative Lookbehind(?<! )

the literal (32₁₀ / 40₈ / 20₁₆)

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

^((0[1-9]|[1-4][0-9]|5[0-6])( +|$)){6}(?<! )$

New

33 44 51 52 53 56 
33 44 51 52 53 59
33 44 51 52 55 55
00 00 00 00 00 00

33 44 51 52 53 56 
33 44 51 52 53 59
33 44 51 52 55 55
00 00 00 00 00 00